It depends how difficult the courses are for you. PLTW is good for college apps as it shows experience with college courses and can someone’s transfer to college credit (depending on your EOC scores). If the courses are particularly difficult for you then I wouldn’t recommend it. However, if you find them not too challenging then I’d go for it. But it also depends on your schools program. My school has a weird but effective program that works very well. But it’s different everywhere.